Fix export for new unified key list #409 and lock drawer in tablets #255

Fixes issue #409 and implemented #255 
Now the drawer stays always open in tablets (check /res/layout-large ). It works as expected. You can also easily limit it to only landscape mode in tablets if you rename /res/layout-large to /res/layout-large-land if i'm not mistaken. 
I also cleaned the xml layouts a tiny bit to make them more organized. 
Tested on normal smartphone with 4.1.2, on nexus 7 tablet with 4.3 and on emulator with 2.3.3
Works as expected in all of them but it's better if you test it as well.